<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
    <script>
      const target = {a: 1}
      const s1 = {b: 1}
      const s2 = {c: 1}

      Object.assign(target, s1, s2)

      console.log(target)

    </script>
	</body>
</html>
